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    • 1. 发明授权
    • Polymeric additives to improve print quality and permanence attributes in ink-jet inks
    • 高分子添加剂,以提高喷墨油墨的印刷质量和持久性
    • US07829608B2
    • 2010-11-09
    • US12185055
    • 2008-08-01
    • Joseph W TsangJohn R Moffatt
    • Joseph W TsangJohn R Moffatt
    • C09D11/00
    • B41M5/0017B41J2/2114B41J11/0015B41M7/0018
    • Two-part fixatives are provided in conjunction with overcoating at least one ink-jet ink printed on a print medium and comprise (1) at least one first reactive component comprising a reactive monomer or oligomer, the reactive species selected from the group consisting of iso-cyanates and epoxy-terminated oligomers, optionally in a vehicle, and (2) at least one second component selected from the group consisting of polyols and polyvinyl alcohols, plus one or more base catalysts, optionally in a vehicle. The two components and catalyst(s) are deposited on the print medium on which the ink-jet ink has been printed, and react to form a hydrophobic polymer overcoating the printed ink and having a glass transition temperature within a range of −20° C. to +50° C. and a melting temperature within a range of 30° C. to 100° C.
    • 提供两部分固定剂,其中连续地涂覆印刷在印刷介质上的至少一种喷墨油墨,并且包括(1)至少一种包含反应性单体或低聚物的第一反应性组分,所述反应性物质选自iso - 氰酸酯和环氧封端的低聚物,任选地在载体中,和(2)至少一种选自多元醇和聚乙烯醇的第二组分,以及任选地在载体中的一种或多种碱催化剂。 将两种组分和催化剂沉积在印刷有喷墨油墨的印刷介质上,并反应形成覆盖印刷油墨的疏水性聚合物,玻璃化转变温度在-20℃ 至+ 50℃,熔融温度在30℃至100℃的范围内。
    • 2. 发明授权
    • Polymeric additives to improve print quality and permanence attributes in ink-jet inks
    • 高分子添加剂,以提高喷墨油墨的印刷质量和持久性
    • US07446134B2
    • 2008-11-04
    • US10824687
    • 2004-04-14
    • Joseph W TsangJohn R Moffatt
    • Joseph W TsangJohn R Moffatt
    • C09D11/00
    • B41M5/0017B41J2/2114B41J11/0015B41M7/0018
    • Two-part fixatives are provided in conjunction with overcoating at least one ink-jet ink printed on a print medium and comprise (1) at least one first reactive component comprising a reactive monomer or oligomer, the reactive species selected from the group consisting of iso-cyanates and epoxy-terminated oligomers, optionally in a vehicle, and (2) at least one second component selected from the group consisting of polyols and polyvinyl alcohols, plus one or more base catalysts, optionally in a vehicle. The two components and catalyst(s) are deposited on the print medium on which the ink-jet ink has been printed, and react to form a hydrophobic polymer overcoating the printed ink and having a glass transition temperature within a range of −20° C. to +50° C. and a melting temperature within a range of 30° C. to 100° C.
    • 提供两部分固定剂,其中连续地涂覆印刷在印刷介质上的至少一种喷墨油墨,并且包括(1)至少一种包含反应性单体或低聚物的第一反应性组分,所述反应性物质选自iso - 氰酸酯和环氧封端的低聚物,任选地在载体中,和(2)至少一种选自多元醇和聚乙烯醇的第二组分,以及任选地在载体中的一种或多种碱催化剂。 将两种组分和催化剂沉积在印刷有喷墨油墨的印刷介质上,并反应形成覆盖印刷油墨的疏水性聚合物,玻璃化转变温度在-20℃ 至+ 50℃,熔融温度在30℃至100℃的范围内。
    • 6. 发明授权
    • Pigment solubilization via treatment with strong base and substitution
    • US06602335B2
    • 2003-08-05
    • US09851659
    • 2001-05-08
    • John R MoffattJoseph W Tsang
    • John R MoffattJoseph W Tsang
    • C09D1102
    • C09D11/322C09B67/0008
    • A method for dispersing a pigment in an aqueous solution is provided. The method comprises: (a) providing the pigment, which is distinguished in having an azo group and either a &bgr;-diketo structure or a hydroxyl group, each conjugatively associated with the azo group; (b) treating a surface of the pigment with a base having sufficient strength (e.g., a pKa of at least 6) to generate a negative charge on the pigment; and (c) reacting the negatively charged pigment with either (1) a first hydrophilic molecule containing at least one functional group comprising a carbon—carbon double bond and a carbonyl that is alpha to the carbon—carbon double bond which reacts via addition to form a hydrophilic group on the pigment or (2) a second hydrophilic molecule containing at least one functional group selected from the group consisting of anionic functional groups, cationic functional groups, and zwitterionic functional groups and at least one suitable leaving group which reacts via substitution to form a hydrophilic group on the pigment. The treated pigment is rendered comparatively soluble in water-based inks, thereby eliminating the need for any dispersant to disperse the pigment.
    • 8. 发明授权
    • Polyamines complexed to anionic dyes, thereby forming water-soluble
cationic dyes
    • 多胺与阴离子染料络合,从而形成水溶性阳离子染料
    • US5788753A
    • 1998-08-04
    • US738532
    • 1996-10-28
    • Norman E. PawlowskiDavid J. HalkoJoseph W. TsangKimberly L. Hockaday Dahm
    • Norman E. PawlowskiDavid J. HalkoJoseph W. TsangKimberly L. Hockaday Dahm
    • C09B69/04C09D11/00C09D11/02
    • C09D11/328C09B69/04
    • An ink-jet ink for ink-jet printers is provided, comprising: (a) an aqueous-based vehicle; and (b) an anionic dye complexed with a polyamine in an amount sufficient to form a pH-insensitive, water-soluble, dye:polyamine complex that acts like a cationic dye. Further, a method of converting the anionic dye to the cationic dye for formulating the ink-jet ink having a desired pH is provided. The method comprises adding a sufficient amount of the polyamine to form the dye:polyamine complex. The dye:polyamine complex is a complex of the dye and the polyamine polymer, which is cationic. Consequently, this complex behaves as a cationic dye. These ink-jet inks show remarkable waterfastness on a variety of common office papers and are pH-insensitive and even in some cases, completely pH-independent. These inks are thus stable over a wide pH range. In addition, the ink-jet inks exhibit superior ink-to-ink bleed when printed next to a drop of another color ink which contains an anionic polymer or carboxylated colorant and resist crusting or drying in ink-jet nozzles.
    • 提供一种用于喷墨打印机的喷墨油墨,包括:(a)水性载体; 和(b)与多胺络合的阴离子染料,其量足以形成像阳离子染料一样起作用的pH不敏感的水溶性染料:多胺络合物。 此外,提供了将阴离子染料转化为阳离子染料以配制具有所需pH的喷墨油墨的方法。 该方法包括加入足量的多胺以形成染料:多胺络合物。 染料:多胺络合物是染料和聚胺聚合物的复合物,其是阳离子的。 因此,这种复合物表现为阳离子染料。 这些喷墨墨水在各种常见的办公用纸上显示出显着的耐水性,并且pH不敏感,甚至在某些情况下,完全不依赖于pH。 因此,这些油墨在宽的pH范围内是稳定的。 此外,喷墨墨水在印刷在一滴含有阴离子聚合物或羧化着色剂的另一种彩色墨水上并且在喷墨喷嘴中抵抗结皮或干燥时表现出优异的墨到墨渗色。
    • 9. 发明授权
    • High precision voltage detector utilizing flash EEPROM memory cells
    • 高精度电压检测器,利用闪存EEPROM存储单元
    • US5559717A
    • 1996-09-24
    • US217165
    • 1994-03-23
    • Kerry TedrowJoseph W. TsangKenneth Wojciechowski
    • Kerry TedrowJoseph W. TsangKenneth Wojciechowski
    • G11C5/14G11C16/30G11C7/00
    • G11C16/30G11C5/143
    • A voltage detector including first and second current paths between a source voltage at a first level and current-limiting device joined to a second level of voltage, each path including an essentially-identical flash EEPROM memory device, one of the memory devices being programmed to have a lower threshold voltage than the other memory device; a circuit for providing a voltage to be measured to gate terminals of one of the memory devices and a percent of the voltage to be measured to the of one of the memory devices having the lower threshold voltage, and an output device connected to measure the current flowing through one of the current paths, the output device being arranged to conduct when current through the first path is greater than current through the second path and not to conduct when current through the first path is less than current through the second path.
    • 一种电压检测器,包括在第一电平的电源电压和连接到第二电平电平的限流装置之间的第一和第二电流路径,每个路径包括基本上相同的闪存EEPROM存储器件,其中一个存储器件被编程为 具有比其他存储器件低的阈值电压; 用于向存储器件之一的栅极端子提供要测量的电压和要测量的电压的百分比到具有较低阈值电压的存储器件之一的电路,以及连接以测量电流的输出装置 流过电流路径之一时,输出装置被布置为当电流通过第一路径时大于通过第二路径的电流而导通,并且当通过第一路径的电流小于通过第二路径的电流时不输出。
    • 10. 发明申请
    • POLYMERIC ADDITIVES TO IMPROVE PRINT QUALITY AND PERMANENCE ATTRIBUTES IN INK-JET INKS
    • 提高喷墨印刷品质量和耐用性的聚合添加剂
    • US20080293881A1
    • 2008-11-27
    • US12185055
    • 2008-08-01
    • Joseph W. TsangJohn R. Moffatt
    • Joseph W. TsangJohn R. Moffatt
    • C08L75/00
    • B41M5/0017B41J2/2114B41J11/0015B41M7/0018
    • Two-part fixatives are provided in conjunction with overcoating at least one ink-jet ink printed on a print medium and comprise (1) at least one first reactive component comprising a reactive monomer or oligomer, the reactive species selected from the group consisting of iso-cyanates and epoxy-terminated oligomers, optionally in a vehicle, and (2) at least one second component selected from the group consisting of polyols and polyvinyl alcohols, plus one or more base catalysts, optionally in a vehicle. The two components and catalyst(s) are deposited on the print medium on which the ink-jet ink has been printed, and react to form a hydrophobic polymer overcoating the printed ink and having a glass transition temperature within a range of −20° C. to +50° C. and a melting temperature within a range of 30° C. to 100° C.
    • 提供两部分固定剂,其中连续地涂覆印刷在印刷介质上的至少一种喷墨油墨,并且包括(1)至少一种包含反应性单体或低聚物的第一反应性组分,所述反应性物质选自iso - 氰酸酯和环氧封端的低聚物,任选地在载体中,和(2)至少一种选自多元醇和聚乙烯醇的第二组分,以及任选地在载体中的一种或多种碱催化剂。 将两种组分和催化剂沉积在印刷有喷墨油墨的印刷介质上,并反应形成覆盖印刷油墨的疏水性聚合物,玻璃化转变温度在-20℃ 至+ 50℃,熔融温度在30℃至100℃的范围内。